Caulking gun



FIG. 1 is a perspective view of a caulking gun showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a side elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a bottom plan view thereof.

The broken line showing of the cartridge and nozzle is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a caulking gun, as shown and described. 